cgit: prepare repo before error pages

This fixes a crash when showing a list of all heads in the <select> box
in the header.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 12 insertions, 7 deletions

diff --git a/cgit.c b/cgit.c
index a3702c2..bd9cb3f 100644
--- a/cgit.c
+++ b/cgit.c
@@ -561,12 +561,8 @@ static void print_no_repo_clone_urls(const char *url)
         html("</a></td></tr>\n");
 }
 
-static int prepare_repo_cmd(void)
+static void prepare_repo_env(int *nongit)
 {
-        struct object_id oid;
-        int nongit = 0;
-        int rc;
-
         /* The path to the git repository. */
         setenv("GIT_DIR", ctx.repo->path, 1);
 
@@ -579,8 +575,13 @@ static int prepare_repo_cmd(void)
         /* Setup the git directory and initialize the notes system. Both of these
          * load local configuration from the git repository, so we do them both while
          * the HOME variables are unset. */
-        setup_git_directory_gently(&nongit);
+        setup_git_directory_gently(nongit);
         init_display_notes(NULL);
+}
+static int prepare_repo_cmd(int nongit)
+{
+        struct object_id oid;
+        int rc;
 
         if (nongit) {
                 const char *name = ctx.repo->name;
@@ -700,6 +701,7 @@ static inline void authenticate_cookie(void)
 static void process_request(void)
 {
         struct cgit_cmd *cmd;
+        int nongit = 0;
 
         /* If we're not yet authenticated, no matter what page we're on,
          * display the authentication body from the auth_filter. This should
@@ -715,6 +717,9 @@ static void process_request(void)
                 return;
         }
 
+        if (ctx.repo)
+                prepare_repo_env(&nongit);
+
         cmd = cgit_get_cmd();
         if (!cmd) {
                 ctx.page.title = "cgit error";
@@ -740,7 +745,7 @@ static void process_request(void)
          */
         ctx.qry.vpath = cmd->want_vpath ? ctx.qry.path : NULL;
 
-        if (ctx.repo && prepare_repo_cmd())
+        if (ctx.repo && prepare_repo_cmd(nongit))
                 return;
 
         cmd->fn();